public static SkeletonLayerAnimation MakeSlidingAnimation(GradientDirection direction, double duration = 1.5)
{
return((layer) =>
{
var startValues = direction.StartPoint();
var endValues = direction.EndPoint();
var startPointAnim = CABasicAnimation.FromKeyPath(nameof(CAGradientLayer.StartPoint));
startPointAnim.From = NSValue.FromCGPoint(startValues.from);
startPointAnim.To = NSValue.FromCGPoint(startValues.to);
var endPointAnim = CABasicAnimation.FromKeyPath(nameof(CAGradientLayer.EndPoint));
endPointAnim.From = NSValue.FromCGPoint(endValues.from);
endPointAnim.To = NSValue.FromCGPoint(endValues.to);
var animGroup = new CAAnimationGroup
{
Animations = new[] { startPointAnim, endPointAnim },
Duration = duration,
TimingFunction = CAMediaTimingFunction.FromName(CAMediaTimingFunction.EaseIn),
RepeatCount = float.MaxValue
};
return animGroup;
});
}
